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// Copyright (c) 2017-2021 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_NODE_TRANSACTION_H
#define BITCOIN_NODE_TRANSACTION_H
#include <attributes.h>
#include <policy/feerate.h>
#include <primitives/transaction.h>
#include <util/error.h>
class CBlockIndex;
class CTxMemPool;
namespace Consensus {
struct Params;
}
namespace node {
struct NodeContext;
/** Maximum fee rate for sendrawtransaction and testmempoolaccept RPC calls.
* Also used by the GUI when broadcasting a completed PSBT.
* By default, a transaction with a fee rate higher than this will be rejected
* by these RPCs and the GUI. This can be overridden with the maxfeerate argument.
*/
static const CFeeRate DEFAULT_MAX_RAW_TX_FEE_RATE{COIN / 10};
/**
* Submit a transaction to the mempool and (optionally) relay it to all P2P peers.
*
* Mempool submission can be synchronous (will await mempool entry notification
* over the CValidationInterface) or asynchronous (will submit and not wait for
* notification), depending on the value of wait_callback. wait_callback MUST
* NOT be set while cs_main, cs_mempool or cs_wallet are held to avoid
* deadlock.
*
* @param[in] node reference to node context
* @param[in] tx the transaction to broadcast
* @param[out] err_string reference to std::string to fill with error string if available
* @param[in] max_tx_fee reject txs with fees higher than this (if 0, accept any fee)
* @param[in] relay flag if both mempool insertion and p2p relay are requested
* @param[in] wait_callback wait until callbacks have been processed to avoid stale result due to a sequentially RPC.
* return error
*/
[[nodiscard]] TransactionError BroadcastTransaction(NodeContext& node, CTransactionRef tx, std::string& err_string, const CAmount& max_tx_fee, bool relay, bool wait_callback);
/**
* Return transaction with a given hash.
* If mempool is provided and block_index is not provided, check it first for the tx.
* If -txindex is available, check it next for the tx.
* Finally, if block_index is provided, check for tx by reading entire block from disk.
*
* @param[in] block_index The block to read from disk, or nullptr
* @param[in] mempool If provided, check mempool for tx
* @param[in] hash The txid
* @param[in] consensusParams The params
* @param[out] hashBlock The block hash, if the tx was found via -txindex or block_index
* @returns The tx if found, otherwise nullptr
*/
CTransactionRef GetTransaction(const CBlockIndex* const block_index, const CTxMemPool* const mempool, const uint256& hash, const Consensus::Params& consensusParams, uint256& hashBlock);
} // namespace node
#endif // BITCOIN_NODE_TRANSACTION_H
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